So I thought I'd answer to this myself, in case anyone is ever in need of details. I did get everything to work smoothly. I used the btAudio library (compatible with most I2S modules, I used the PCM5102), which has a set volume function included.
So I thought I'd answer to this myself, in case anyone is ever in need of details. I did get everything to work smoothly. I used the btAudio library (compatible with most I2S modules, I used the PCM5102), which has a set volume function included.